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A B B ME A SUR EMENT & A N A LY TIC S | USER GU IDE | IM/A Z 20 P - EN R E V. G

Endura AZ20 series probe

Combustion oxygen monitor

Measurement made easy

Introduction

The Endura AZ20 is the latest in a long line of high-
quality, combustion gas analyzers from ABB.

The sensor, based on a zirconium oxide cell, is 
mounted at the tip of the probe that is inserted in 
the flue duct. The resulting direct, in situ 
measurement provides accurate and rapid oxygen 
reading for combustion control / optimization and 
emissions monitoring purposes.

Endura AZ20 has been designed for extended 
periods of maintenance-free operation. The 
modular design with reduced component count 
improves the reliability and robustness of the 
system and simplifies breakdown repair if it occurs.

Kits containing all the parts needed to complete on-
site repairs are available from ABB, ensuring that 
service personnel can effect repairs quickly and 
efficiently at minimum cost. The Endura AZ20 probe 
has retained an easy-access cell arrangement, 
similar to the proven ZFG2 probe. This ensures cell 
replacement can be carried out on-site using readily 
available, basic hand tools, even after long periods 
of high temperature operation.

This User Guide should be used in conjunction with 
the following publications:

•  Transmitter User Guide (

IM/AZ20E-EN

)

•  Maintenance Guide (

IM/AZ20M–EN

).

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Superior technology 
and quality from the 
world leader in oxygen 
measurement

Summary of Contents for Endura AZ20 series

Page 1: ...dular design with reduced component count improves the reliability and robustness of the system and simplifies breakdown repair if it occurs Kits containing all the parts needed to complete on site re...

Page 2: ...scanning this code Search for or click on Data Sheet Endura AZ20 oxygen monitor Combustion gas analysis DS AZ20 EN User Guide Endura AZ20 series probe Combustion oxygen monitor IM AZ20P EN Maintenance...

Page 3: ...ter Weights Unpacked and Packed 16 4 Connections 17 4 1 Electrical Safety 17 4 2 Cable Preparation 18 4 2 1 Endura AZ20 Probe to Remote Endura AZ20 Transmitter 18 4 3 Electrical Connections 20 4 3 1 E...

Page 4: ...ned personnel and in accordance with the information given Normal safety precautions must be taken to avoid the possibility of an accident occurring when operating in conditions of high pressure and o...

Page 5: ...onmental protection use period in years Electrical equipment marked with this symbol may not be disposed of in European public disposal systems after 12 August 2005 In conformity with European local a...

Page 6: ...problems with installation starting or using the instrument please contact the company that sold it to you If this is not possible or if the results of this approach are not satisfactory please contac...

Page 7: ...n integral or remote transmitter During operation a zirconia cell within the probe is held at a constant temperature of 700 C 1292 F by a probe heater and control thermocouple assembly If the heater c...

Page 8: ...tion away from strong electrical and magnetic fields If this is not possible particularly in applications where mobile communications equipment is expected to be used screened cables within flexible e...

Page 9: ...rmally lag the probe mounting flange and body to prevent acid dew point corrosion and to maintain the probe head temperature within the range of 20 to 70 C 4 to 176 F 3 4 1 System Overview Fig 3 2 Pro...

Page 10: ...the probe which require a set pressure of 1 bar 15 psi to deliver the correct flows Because the gases are delivered as a pressure at the probe it is permissible to use parallel pipework for multiple...

Page 11: ...rence Air Supply 0 3 to 0 5 l min 0 64 to 1 06 scfh Preset Flow Refer to page 36 for part numbers Fig 3 6 Non AutoCal with Test Gas Air and Optional Certified Test Gas Fig 3 7 Non AutoCal with 2 Certi...

Page 12: ...ers 1 Bar 15 psi Reference Air Pump Reference Air Supply 0 3 to 0 5 l min 0 64 to 1 06 scfh Preset Flow AutoCal Probe Fig 3 10 Non AutoCal with Test Gas Air and Optional Certified Test Gas Fig 3 11 No...

Page 13: ...lange to Probe Cell in m ft 0 5 1 0 1 5 2 0 2 5 3 0 3 5 or 4 0 1 7 3 3 5 0 6 6 8 2 9 9 11 5 13 1 For flange dimensions refer to Section 3 7 page 12 For probe weights refer to page 16 Dimensions in mm...

Page 14: ...IS 65 5K 155 6 10 12 0 47 15 0 59 130 5 12 JIS 80 5K 180 7 08 12 0 47 19 0 75 145 5 71 Table 3 1 4 Hole Probe Flange Types and Dimensions A B C D Flange Type A B C D PCD 6 Hole Flanges ABB Standard 0...

Page 15: ...10 shakeproof washers 6 x M10 plain washers 6 x M10 nuts 3 8 3 Long Probe to 0 5 m 1 7 ft Probe Adaptor Plate Part No AZ200 794 The Long Probe to 0 5 m 1 7 ft Probe Adaptor Plate comprises the followi...

Page 16: ...ill and bolt the plate to the flue 3 Fit the probe gasket C and insert the probe into the flue 4 Secure the probe and gasket using nuts and washers D as follows a 0 5 m 1 7 ft probe 6 x M6 nuts and wa...

Page 17: ...ecure the gasket and plate with 6 x M10 nuts and washers C 4 Fit the probe gasket D over the probe end Insert the probe into the flue 5 Secure the probe and gasket using 6 x M6 screws and washers E No...

Page 18: ...1 4 1 0 3 3 11 3 24 9 17 9 39 6 1 5 5 0 13 5 29 8 21 7 47 7 2 0 6 6 15 8 34 8 25 4 55 9 2 5 8 2 18 39 7 30 7 67 7 3 0 9 9 20 3 44 7 34 4 75 8 3 5 11 5 22 5 49 6 38 1 84 0 4 0 13 1 24 8 54 6 41 8 92 2...

Page 19: ...t use alternative wires The equipment conforms to Installation Category II of IEC 61010 All connections to secondary circuits must have basic insulation After installation there must be no access to l...

Page 20: ...at the terminal plug s by cutting sleeves back to expose 10 mm 0 4 in of bare wire 4 Important on non AutoCal probes do not cut the AutoCal wires back to the outer insulation sheath Instead bundle the...

Page 21: ...nics Manual IM AZ20E EN Screen Foil 1 Screen Foil 2 Warning Heater wires blue brown rate d at 85 to 265 V Screens 1 and 2 must be joined for correct operation Green TC Probe End Twist Screens 1 and 2...

Page 22: ...r transmitter connections Notes Non AutoCal probes are not fitted with the 6 way AutoCal terminal block or pressure switch solenoid valve block For probes fitted with AutoCal make standard connections...

Page 23: ...probe terminal block B taking care not to disturb the existing wiring C 5 Tighten cable gland D 6 Refit the probe end cap E and tighten hand tight 7 Refer to IM AZ20E EN for transmitter connections T...

Page 24: ...n systems without restrictors pressure is still set to 1 bar 15 psi then flow is restricted by valves on flowmeters 4 4 2 Connection Types Note Connection types comprise 1 4 NPT female threaded entry...

Page 25: ...e external TG1 connection only TG2 connection is blanked off permanently Fig 4 6 Test Gas Connections Endura AZ20 Probe with Remote Transmitter Shown Test Gas 2 Inlet AutoCal Use Only Test Gas 1 Inlet...

Page 26: ...et see Fig 4 8 4 4 7 Inline Shut off Valves On non AutoCal systems if the test gas line is connected permanently and is 10 m 33 ft from the supply fit non return valves at the probe head to prevent br...

Page 27: ...8 Internal Test Gas and Reference Air Tubes Fig 4 9 Internal Test Gas and Reference Air Tubes Non AutoCal ACJC Reference Air Tube Test Gas Tube to Sensor Fig 4 10 Internal Test Gas and Reference Air T...

Page 28: ...3 5 2 and 3 5 3 pages 9 and 10 for test gas and reference air supply configurations connections are the same for remote and integral transmitters 5 2 1 AutoCal System with Restrictors To set up an Aut...

Page 29: ...1 Make test gas and reference air connections as detailed in Section 3 5 3 page 10 remote or integral transmitter 2 Turn on Test Gas 1 and adjust the pressure to 1 bar 15 psi 3 Turn Test Gas 1 off at...

Page 30: ...70 W at 115 V AC power is limited to 70 W max by AZ20 transmitter over an 85 to 265 V AC range AZ20 ZFG2 Replacement Probe Nominally 25 120 W at 55 V AC for use only with a ZDT analyzer or ZMT transm...

Page 31: ...a is an electrolyte that conducts only oxygen ions at temperatures in excess of 600 C 1112 F the voltage generated between the electrodes the cell output is a function of the ratio of the oxygen parti...

Page 32: ...1000 Z MTOxygen Analyzer Oxygen 20 0 ZMT ZDT FG Measured gas pressure limits must be constant 0 35 bar 5 psi 20 mm or 1 2 NPT Gland External Reference Air Supply Line Required for ZMT Transmitter or Z...

Page 33: ...rtant For removal of the existing ZFG2 probe complete with its conduit assembly and installation of the Endura AZ20 ZFG2 replacement probe refer to the ZFG2 probe manual this manual can be downloaded...

Page 34: ...bing does not kink especially after the probe end cap is re fitted c fit a blanking plug to the external Ref Air connection at B on the probe body to prevent water ingress d proceed to step 3 2 For pr...

Page 35: ...using the conduit s Reference Air supply connect conduit reference air line H 4 Refit shroud C and secure it with the 2 shroud retaining screws B 5 Refit the lower panel A Warning Before disconnectin...

Page 36: ...and tighten the gland 2 Make connections to heater terminal D cell terminal E and thermocouple terminal F as listed in Table B 2 3 For probes using the conduit s Reference Air supply connect conduit...

Page 37: ...must be powered by an independent supply Warning Isolate the Endura AZ20 transmitter and external automatic calibration panel before making AutoCal connections Fig C 1 Schematic Example of External A...

Page 38: ...H Controlled Heater Voltage 55 V AC Max Conduit Ref Air Line Remote Probe Connections AZ20 ZFG2 Replacement Probe Screen Ref Air Line from Conduit Cell Cable TC Cable Heater Cable AZ20 Version AZ20 ZF...

Page 39: ...Sales Software Service...

Page 40: ...document and in the subject matter and illustrations contained therein Any reproduction disclosure to third parties or utilization of its contents in whole or in parts is forbidden without prior writt...

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